Toggle press



W. KLOCKE.

TOGGLE PRESS.

APPLICATION FILED MAY 15, 1920.

Patented Oct. 31, 1922.

2 SHEETSSHEET l- INVENTOR qwjwfl By Aiiorneys,

W. KLOCKE.

TOGGLE PRESS.

APPLICATION FILED MAY 15, 1920.

Patented Oct. 31,1922.

2 SHEETS-SHEET 2.

INVENTOR By AltoAneys, I

ldetented @ct. 3i, i922.

WILLIAM KLOCKE, OF NQODHAVEN, NEW YORK, ASSIGNOR TO E. W. BLISS COMPANY, OF BROOKLYN, NEVI YORK, A CORPORATION OF WEST VIRGINIA.

TOGGLE PRESS.

Application filed May 15, 1920. Serial N0. 381,776.

.7. '0 (ZZZ LU/1.0772 it may concern.

Be it known thatL l VILLIAM KLOOKE, a citizen of the United States of America, residing in lVoodhaven, in the borough. and county of Queens, city and State of New York, have invented certain new and useful Improvements in Toggle Presses, of which the following is a specificatioin This invent-ion relates to presses, and aims to provide improvements therein.

The present invention provides a novel toggle mechanism for actuating the slide which carries the blank holderor die.

The invention further provides a slide actiiatingmechanisnrwhich admits of the press being readily altered or adjusted to provide for changing the length of stroke of the said slide which carries the blank holder or die, and which admits of presses havingdifferent lengths of stroke of theblank-holder, being built of partswhich are thesame. or standard, for theseveral presses, or with a minimum of different parts.

Theinvention further provides novel combinations and sub-combinations hereinafter set forth. a

An embodiment of the invention is,il ln.strated in the accompanying drawings. in said drawings,

Figure 1 is an end view of a press enibodying the invention; i

Fig. 2 is a side view of the press showing Fig. 1; i

Fig. 3 is a detailed view showing the po sition of certain parts shown in Fig. 1 in the opposite extreme position of the blank holder or die carrying slide;

Figs. 4 and 5 are diagrammatic views of the parts shown in Figs. 1 2 and 3 inclu sive in the extreme positions of the blank holder or die carrying slide;

Figs. 6 and 7 are viewssimilar to l and a showing the parts connected to a crank having a throw, which is less than that of the crank in Figs. 4. and5.

Figs. 8 and 9 are views similar to Figs. il and 5 and showing parts actuated by a crank having a greater throwtha n thecranl: shown in Figs. 4 and 5.

Referring to said drawings, numeral 10 designates a re'ciprocatory slide adapted to carry'a dieor blank holder; numeral 11y designatesthebed' of the press adapted to carry the supplementary part to the part which the'slid'e 10 carries as-forexam'ple, a

die, where the. slide 10 carries the blank holder. The punch (which is not shown) may work either through the bed or slide. In the present embodiment there is shown a crank shaft 13, the crank let of which is adaptedto be connected with the punch. The punch in the present embodiment would therefore work through the slide.

The blank holder or die carrying slide 10 has thereon a rocking part such as a rockshaft or the equivalent, 80. A toggle 40 connects the blank holder or die carrying slide 10with a fixed part of the frame, as for example, brackets Q2. The toggle it comprises an arm 4% on the rock shaft and a link 46 connecting the arm 44- with the bracket 42. Means are provided for lifting and rocking the said rock-shaft 30; whereby to bend the toggle 40 and cause the slide '10 to reciprocate or move to and from the blank-holding position of the parts, and

these means are preferably such asto cause the slide l0'to dwell in its blank-holding position. These means conveniently comprise a second toggle comprising an arm 36 on the rock-shaft 30,, and a link 37 connected to a reciprocatory actuating part, which actuating part is conveniently an actuating slide 17 reciprocating parallelly to the line of movement of the slide 10 upon gibs or the like 18 provided upon the side of the press frame. The slide 17 may be movedin a suitable manner, as here shown being conveniently connected by means of a connecting rod or link 20 attached to a crank pm 22 on a drlvlng gear 24 fast upon the crank shaft 13 and a crank pin 25 on the slide 17. The blank holder or die "carrying slide 10 is hence suspended by means of toggles 85 and between the bracket 42 or other fixed part of the press frame and the actuating part or slide 17.

The arrangement of the toggles is preferably such that when the'blank holder or diecarrying slide is at the limit of its motion toward the bed, i. e., in the blank-holding position, the toggle l0 iseXtended and thelink 87 of r the toggle '35 is substantially perpendi'cular tothe line of movement ofth'e' actuator slide 17. At and approaching such position of the parts it will be seen (referring particularly to Fi syaiar the cinema is moving through those de rees of itsmov'cment in the vicinity of 2T0" and that the two links 44; and; d6 of the toggle e6 are'in alinement; and that the end of the link 37 (of the toggle 35) which is attached to the slide 17 is moving in an are substantially parallel to the arm 36. By this arrangement there is provided a considerable dwell of the blank holder or die-carrying slide 10. By the arrangement shown there is obtained a dwell of more than 90 of rotation of the crank 22.

The present invention admits of readily altering or adjusting the length of thestroke of the. blank holder or die-carrying slide 10.

Referring to Fig. 1, there are shown two positions of the crank pin 22 other than that occupied by said crank pin 22 in said figure, and designated by the numerals 22" and 22, the position 22 being closer to the center of the crank shaft 13 than the crank pin 22, and the position 22 being further from the center of the crank shaft than the crank pin22.

The link 20 also has preferably a plurality of positions of connection to the slide 17, as,

' for example, the positions 25, 25 25 The positions of the blank holder or diecarrying slide in the extremes of its position to and from the bed 11 are shown diagrammatically in Figs. 4 to 9 inclusive; Figs. 4 and 5 showing the two extreme positions of the parts; Figs. 6 and '7 showing the position of the parts in their two extreme movements with the crank pins 22 and 25 located in the positions 22 and 25, Fig. 1; and Figs. 8 and 9 showing the position of the parts in their extremes of movement with the crank pins 22 and 25 located in position 22 and 25 Fig. 1. It will be perceived that considerable variation of the length of stroke of the slide 10 may be accomplished by a simple change of position of the crank pin 22, and also preferably a corresponding change of position ofthe crank pin 25, thereby avoiding the necessity of substituting any of the parts of the toggles 35 and 4:0.

By reason of the fact that the rock shaft, or equivalent part, 30, moves with the blank holder or die-carrying slide 10, there is no objectionable strain upon the bearings when the toggle parts are in such acute positions as shown in Fig. 8, the press working with satisfactory ease in such positions.

The toggles 85 and 40 are preferably duplicated at the front and back of the press, and moreover in some types of presses, es pecially heavy presses, it is preferable to provide complete actuating mechanisms for the blank holder or die-carrying slide 10 at the two sides of .the press. The driving force may be imparted to the press through the gear or gears 24.

The inventive ideas herein set forth may receive other embodimentsthan those specifi-,

cally illustrated and described.

What I claim is: .1. drawing press comprising a reciprocatory blank-holder or die-carrying slide, and means for reciprocating said slide with a dwell in its movement, said means comprising a rocking part upon said blankholder'slide, a toggle connected at one end to said rocking part, a reciprocatory part, and a connection between said reciprocatory part and said rocking part, said connection raising said slide, turning said rocking part and moving the parts of said toggle into and out of alinement.

2. A drawing press comprising a reciprocatory blank-holder or die-carrying slide, and means for reciprocating said slide with a dwell in its movement, said means comprising a rocking part upon said blankholdcr slide, a toggle connected at one end to said rocking part, a reciprocatory part, and a toggle connection between said reciprocatory part and said rocking part, said connection raising said slide, turning said rocking part, and moving the parts of said toggle into and out of alinement.

. 3. A drawing press comprising a reciprocatory blank-holder or die-carrying slide, and means for reciprocating said slide with a dwell in its movement, said means com prising an actuator-slide, means for reciprocating said actuator-slide,,a rocking part upon said blank-holder'slide, a toggle between said rocking part and said actuatorslide, and a toggle. between said rocking part and a part of the press.

4. A drawing press comprising a reciprocatory blank-holder or die-carrying slide, and means for reciprocating said slide with a dwell in its movement, said means comprising an actuator-slide, means for reciprocating said actuator-slide, a rocking part upon said blank-holder slide, a toggle between said rocking part and said actuatorslide, and a toggle between said rocking part and a part of the press, said actuator-slide moving parallel to said blank-holder slide.

5. A drawing press comprising a reciprocatory blank-holder or die-carrying slide, and means for reciprocating said slide with a dwell in its movement, said means comprising an actuator-slide, means for reciprocating said actuator-slide, a rocking part upon said blank-holder slide, a toggle between said rocking part and said actuatorslide, and a toggle between said rocking part and a part of the press, said second named toggle being so arranged that it is extended in a line parallel to the direction of reciprocation of said blank-holder slide, and said first named toggle being so arranged that its leg which is connected to the actuator-slide is substantially perpendicular to the line of movement of said actuator-slide in the e:- tended position of said second named toggle.

6. A drawing press comprising a recipro catory blank-holder or die-carrying slide, and means for reciprocating said slide with a dwell in its movement, said means comprising a rocking part upon said blankholder slide, a toggle between said rocking part and a part of the press, a reciprocatory part, and a second toggle connecting said rocking part and said reciprocatory part, so arrai'iged that its legs are substantially at right angles to one another in the extended position of said firstnamed toggle;

7. A drawing press comprising a recipro eatery blank-holder or die-carrying slide, and means for reciprocating said slide with a dwell in its movement, said means com prising an actuator-slide, a crank and a connection between said actuator-slide and crank, a rocking part upon said blank-- holder slide, a toggle between said rocking part and said actuator-slide, and a toggle between said rocking part and a part of the press.

8. A drawing press comprising a reciprocatory blank-holder or die-carrying slide, and means {or reciprocating said slide with a dwell in itsunovement, said means comprising an actuator-slide, a crank-shaft, a gear on a (rank-shaft, a crank upon said gear, and a connection between said actuator slide and crank, a rocking part upon said blank-holder slide, a toggle between said rocking part and said actuator-slide, and a toggle between said rocking part and a part of the press,

9. A drawing press comprising a reciprocatory blank-holder, or die-carrying slide and means for reciprocating said slide with a dwell in its movement, said means comprising a rocking part upon said blank holderslide, a toggle between said rocking part and a fixed part of the press, and means for lifting and rocking said rocking part,

whereby to reciprocate said slide.

10. A drawing press comprising a reciprocatory blank-holder or die-carrying slide, and means for reciprocating the same, said means comprising a reciprocatory part, and serial connections between said reciprocatory part and a fixed part of the press, said connections being connected to said blankholder slide intermediate the connection of said connections to said reciprocatory part and to said fixed part of the press.

11. A drawing press comprising a reciprocatory blank-holder or die-carrying slide, and means for reciprocating the same, said means comprising a reciprocatory part, and serial connections between said reciprocatory part and a fixed part of the press, said connections comprising arocking part on said slide and a toggle between said slide and said reciproc-atory part.

12. A drawing press comprising a recipro catory blank-holder or die-carrying slide, and means for reciprocating the same, said means comprising a reciprocatory part, and serial connections bet-ween said reciprocatory part and a fixed part oft-he press, said connections comprising a rocking part on said slide, a toggle connecting said rocking part and said fixed part of the press, and means between said reeiprocatory part and rocking part t'oivrocking the latter. I I

18. A drawing press comprising a side frame, a reciprocatory blank-holder or diecarrying slide, and means for reciprocating the same, said means comprising an actuating slide alongside said side frame, a rocking part onsaid blank-holder slide, and a direct connection between said rocking part and said actuating slide.

14. A drawing press comprising aside frame, a reciprocatory blank-holder or diecarrying slide, and means for reciprocating the same,,said means comprising a rotary shaft havingia wheel thereon on the outside of said side frame, an actuating slide alongside said side frame, a connection between said rotary shaft outside of said wheel, and said actuating slide, a rocking part on said blank-holder slide, and, a direct connection between said actuating slide and said rock- WILLIAM KLOGKE. 

